Statistics and reports analyze the change over time of any kind of phenomena. [...] For the software industry, statistics and reports provide both an ongoing challenge and an ongoing market. At present, programming languages such as PHP and Java come with built-in packages for developing applications around statistical problems.

They use two PEAR packages for the statistics - Text_Statistics and XML_Statistics to pull in different kinds of data and extract results from it. The next step is to make a meaningful report out of these numbers - that's where PHPReports comes in. It's a simple tool that makes simple reports for you that can then be styled with CSS however you'd like.